Container for spray guns



y 14, 1940- E. NORTHCUTT 2.200.675

CONTAINER FOR SPRAY GUNS Filed Sept. 11, 1937 2 Sheets-Sheet 1 HAM/Hm Ellie Hush Nornhcutc y 1940. E. H. NORTHCUTT CONTAINER FOR SPRAY GUNS 2 Sheets-Sheet 2 Filed Sept. 11, 1937 Ma g Ellie Hugh NorrhcuH Patented May 14, 1940 UNITED STATES PATENT OFFICE Claims.

I This invention relates to new and useful improvements in containers for spray guns. I One object of the invention is to provide an improved container which is adapted to be con- 5 fnected to the usual paint spray gun and which has provision for containing several different fluids or liquids, whereby any one of said liquids may be conducted to the gun.

An important object of the invention is to prolo vide an improved container for a standard paint spray gun which has a plurality of individual compartments therein, each compartment having a difierent liquid therein, said container includ- 3 ing a single valve for controlling the flow from the compartments, whereby any one of the liquids, or a predetermined proportion of each may be conducted to the gun.

Another object of the invention is to provide an improved liquid container which is constructed of two receptacles, one within the. other, whereby each receptacle may contain a liquid without admixing with the liquid in the other receptacle; said receptacles having their upper ends terminating in the same plane, whereby a single cap or cover plate may close both openings.

A further object of the invention is to provide a container having a plurality of compartments communicating with a common outlet which is adapted to be connected with an ejecting member, with a single control element mounted in the outlet for controlling the flow from said compartments to the member, the valve being constructed so that liquid from any compartment can independently flow to the ejecting member or any desired admixture of the various liquids can flow to said member.

A construction designed to carry out the invention will be hereinafter described, together with other features of the invention.

' The invention will be more readily understood from a reading of the following specification and. by reference to the accompanying drawings, in which an example of the invention is shown, and wherein:

Figure 1 is a view, partially in section and partially in elevation, of a container, constructed in accordance with the invention, and applied to a standard paint spray gun which is shown in elevation,

1 Figure 2 is a horizontal, cross-sectional view,

taken on the line 2-2 of Figure 1, I

Figure 3 is a horizontal, cross-sectional view, taken on the line 33 of Figure 1,

. Figure 4 is a horizontal, cross-sectional view, taken on the line 4-4 of Figure 1,

Figure 5 is an enlarged, transverse, vertical, sectional view of the upper portion of the container,

Figure 6 is an enlarged view, similar to Figure 5, and taken on right angles to Figure 5, and

Figures '7, 8 and 9 are enlarged, sectional views of the control valve, showing its various positions.

In the drawings, the numeral l0 designates a standard spray gun such as is commonly used for spraying paint, lacquer and the like. has the usual outlet nozzle H and is provided with an internally screw-threaded collar l2, whereby a liquid supply line may be connected to the gun. The particular construction of the gun forms no part of the present invention and is, 15 therefore, subject to variation.

For storing the liquid or liquids to be sprayed,

a container l3, which is adapted to be connected to the gun, is provided. The container includes an outer receptacle [4 which is substantially 20 cylindrical in cross-section and the upper end of this receptacle is provided with a reduced neck portion IS. The upper end of the neck is formed with an annular bead I6 as is clearly shown in Figure 5. The bottom of the receptacle I4 is recessed inwardly to form an upwardly extending projection I'l. An inner receptacle i8 is adapted to be inserted within the outer receptacle l4 and the outer diameter of this receptacle is substantially the same as the diameter of the reduced neck l5 formed at the upper end of the outer receptacle 14. The upper end of the inner receptacle I8 is curved outwardly toform an annular curved flange I9 and when the inner receptacle is in position within the outer receptacle, the flange l9 engages over the bead It on the neck of said outer receptacle. The central portion of the bottom of the inner receptacle I8 is recessed at 2 0 and this recess is adapted to engage theprojection ll formed in the bottom of the outer receptacle 14, whereby the bottoms of the receptacles are spaced from each other. Since the lower portion of the receptacle I4 is larger than its neck portion IE, it will be manifest that an annular space 2| is provided between the receptacles. The inner receptacle 3 is formed with a vertical recessed portion 22 at one side thereof (Figures 1 and 3), whereby this recessed portion is spaced from the neck portion l5 of the outer receptacle.

A flanged cover plate 23 is arranged to close the upper end of the receptacles and when in position thereon, its flange overlies the annular flange l9 as is clearly shown in Figure 5. The cover plate 23 is formed with an opening 24 which is located The sun 10.

at substantially the center thereof and a connecting nipple is inserted within said opening. The nipple is formed with a hexagonal nut 26 at its central portion and the extreme lower end of said nipple which extends into the inner receptacle [8 is screw-threaded to receive a nut 27 whereby the nipple is securely fastened within the opening 24. It is pointed out that a suitable packing disk or member 28 may be interposed between the upper ends of the receptacles and the cover plate 23.

The nipple 25 has an axial bore 29 and the upper end of an outlet tube 3!] is connected in the lower end of this bore, whereby the liquid within the inner receptacle [8 may flow upwardly through the tube 30 and into the bore of the nipple. The upper end of the nipple is externally screw-threaded to receive the lower end of a tubular valve body or sleeve 3|. When the body is secured to the nipple, the bore 32 of said body communicates with the bore 29 of the nipple and with the outlet tube 33. The upper end of the bore 32 of the valve body 3! is connected with the collar I2 of the spray gun ID by a suitable connection 33. With such arrangement, it will be manifest that the liquid from the inner receptacle l8 may flow through the tube 33, bore 29 of the nipple, bore 32 of the valve body 3| and through the connection 33 to the outlet nozzle ll of the spray gun.

For conducting the liquid from the outer receptacle [4 to the spray gun IS, an outlet tube 34 extends through an opening 35 provided in one side of the cover plate-23. This opening is lo cated above the vertical recessed portion 22 of the inner receptacle l3, whereby the tube 34 extending through the opening may pass downwardly into the interior of the outer receptacle M, as is clearly shown in Figure 1. 'A suitable sleeve member 36 surrounds the tube 34 and extends through the opening 35 and the upper end of this sleeve is externally screw-threaded to receive a nut 37, whereby the tube 34 is fastened to the cover plate 23. The upper end of the tube 34 is curved inwardly toward the valve body and is secured by a retaining nut 38 to the outer end of a screw-threaded nipple 39. The nipple extends radially from the valve body 3| and is provided with a port 49 which has its inner end communicating with the vertical bore 32 of the valve body. With this arrangement, it will be obvious that liquid from the outer receptacle [4 may flow upwardly through the pipe 34 and into the port 40, from where it may flow upwardly through the upper portion of the bore 32 of the valve body 3| and finally to the outlet nozzle ll of the spray gun I0. An upwardly extending vent tube 4| is fastened in the cover plate 23 and is located adjacent the outlet tube 34. This vent tube establishes a communication between the interior of the receptacle l4 and the atmosphere. A vent opening 4-2 is formed in the cover plate 23 (Figure 5) and establishes communication between the interior of the inner receptacle l8 and the atmosphere and serves the same purpose as the vent tube 4 I.

For controlling the flow of liquid from the receptacles l4 and E8, the valve body 3! is formed with a circular valve chamber 43. A cylindrical valve member 44 is mounted to rotate within the chamber 43 and has a snug sliding fit therein. An operating handle or lever 45 is connected to one end of the valve member 44 and is located exteriorly of the valve body 3 l, whereby a manual rotation of the member is facilitated. As is clearly shown in Figures 5, 7, 8 and 9, the valve member 44 is provided with a diametrically extending port or passage 45 and when the memher is in the position shown in Figures 5 and '7, the passage 45' is in registration with the bore 32 of the valve body, whereby a flow through said bore is permitted. A radial port or ofifice 46 extends from the diametrically extending passage 45 to the outer surface of the valve member and this port is adapted to register with the port 40 in the valve body. When the valve member is in the position shown in Figure 5, the port 46 is in registration with the port 40, whereby liquid from the outer receptacle 14 may flow through the outlet tube 34, port 43, orifice or port 43 and then upwardly through the bore 32 of the valve body 3|. At this time or in this position of the valve member, the passage 45 is alined with the bore 32 whereby a flow from the inner receptacle l8 upwardly through the outlet tube 30 may pass upwardly to the spray gun l0. Therefore, at this time liquid from both the inner and outer receptacles l4 and i8 is conducted to the spray gun,

whereby a mixture of the liquid in the container is ejected from said gun.

When the valve member 44 is rotated to the position shown in Figure 7, the port or orifice 46 is moved out of alinement with the port 40 whereby flow from the outer receptacle I4 is prevented. This position of the member 44, however, permits a flow upwardly through the bore 32 of the valve body, whereby the liquid from the inner receptacle may pass to the spray gun. By rotating the valve member to the position shown in Figure 8, the passage 45 is alined with the port 40 and the port or orifice S6 is alined with the upper portion of the bore 32 of the valve body, whereby a fiow from the tube 34 may pass upwardly to the spray gun l0. Thus it will be seen, that the single valve controls the flow from either one or the other of the receptacles l4 and I8 and may also permit a simultaneous flow from both chambers. When the liquid is flowing from both chambers, it might be desirable to vary, to some extent, the admixture or the proportion of the amount of liquid flowing to the gun. In such case, the valve member 44 may be adjusted to a position such as is shown in Figure 9, whereby the amount of liquid flowing through the tube 34 is reduced in proportion to the amount flowing upwardly through the bore 32 from the inner receptacle IS. The single valve member 44 will, therefore, positively control the flow of liquid from the receptacles to the gun Ill. The liquids may flow independently from either receptacle or may flow simultaneously to said gun as a mixture. It is the usual practice to place the paint or lacquer within the inner receptacle [8, while the thinner is introduced into the outer receptacle M. However, it is pointed out that any liquid may be introduced into either one or the other of said chambers and it would be possible to place paint of a different color within the receptacles.

The cover plate 23 may be fastened in position on the receptacles in any suitable manner but it is preferable to employ a yoke 48. As is clearly shown in Figure 6, the yoke includes an integral collar 49 provided at the central portion thereof and this collar encircles the lower por tion of the valve body 3|. The yoke arms extend diametrically of the cover plate 23 and have their outer ends curved downwardly so as to extend below the flange of the cap plate. The extreme lower end of each yoke arm is formed with a hook 511 which is adapted to engage be- 15 neath a radial pin 5| which extends outwardly from the upper portion of the outerreceptacle l4. By holding the hook 50 in engagement with the pin 5|, the collar 49 of the yoke is internally screw-threaded to receive a nut 52, which nut also surrounds the valve body 3|, as is clearly shown in Figure 5. The nut 52 isprovided with a thumb piece or operating lug 53, whereby manual operation or rotation of the nut is facilitated. With this arrangement, it will be evident that when the nut 52 is rotated the yoke 48 is moved upwardly or downwardly with relation to the cover plate 23, whereby the hooks 50 on the yoke arms are moved vertically With relation to the pin 5|. By lowering the yoke 48, the hooks 50 will be disengaged from beneath the pins 5|, whereby the outer receptacle I4 may be rotated to move the pins out of alinement with the hooks after which said receptacle may be removed from the cover plate.

It is pointed out that the single cover plate 23 is utilized to close the upper ends of both the inner and outer receptacles, whereby the necessity of providing a separate cover for each receptacle is eliminated. Although it is preferable to place the paint or lacquer within the inner receptacle l8, while the thinner is introduced into the outer receptacle I4, it is pointed out that any suitable liquid to be sprayed may be introduced into either of the receptacles. It is further pointed out that in some instances it may not be necessary to employ the outer receptacle M as only one paint or lacquer may be sprayed. In such instance, the outlet tube 34 would be disconnected from the nipple 39 and a suitable plug would be employed to close the port 4|]. When the outer receptacle i4 is not employed for storing a liquid, it may be utilized as a chamber in which a suitable substance may be introduced which will either cool or heat the paint contained within the inner receptacle I8. Thus, in the summer time, ether or some other cooling medium may be stored within the outer receptacle l4 and will act to cool the liquid being sprayed from the inner receptacle l8. Similarly, in the winter a heating medium may be introduced into the outer receptacle l4.

What I claim and desire to secure by Letters Patent is:

1. A container for receiving liquids to be sprayed by a liquid spray gun including, a cylindrical liquid receptacle having its upper portion reduced in diameter, an inner liquid receptacle inserted within the first receptacle and having its lower end resting on the bottom of the outer receptacle, the upper end of the inner receptacle having substantially the same diameter as the reduced upper portion of the outer receptacle so as to fit snugly therein, the upper portion of the inner receptacle having a Vertical recess in its wall, a transverse cover overlying the open upper ends of the receptacles, an axial conductor secured in the cover and depending into the inner container for conducting liquid therefrom, a second conductor extending through said cover and through the recess in the wall of the inner receptacle for conducting liquid from the outer receptacle, and means connected with the upper ends of the conductors for conducting the liquids therefrom to a suitable spray gun.

2. A container for receiving liquids to be sprayed by a liquid spray gun including, a cylindrical liquid receptacle having its upper portion reduced in diameter, an inner liquid receptacle its lower end resting on the bottom of the outer receptacle, the upper end of the inner receptacle having substantially the same diameter as the reduced upper portion of the outer receptacle so' as to fit snugly therein, the upper portion of the inner receptacle having a vertical recess in its wall, a transverse cover overlying the open upper ends of the receptacles, an axial conductor secured in the cover and depending into the drical liquid receptacle having its upper portion reduced in diameter, an inner liquid receptacle inserted within the first receptacle and having its lower end resting on the bottom of the outer receptacle, the upper end of the inner receptacle having substantially the same diameter as the reduced upper portion of the outer receptacle so as to fit snugly therein, the upper portion of the inner receptacle having a vertical recess in its Wall, a transverse cover overlying the open upper ends of the receptacles, an axial conductor secured in the cover and depending into the inner.

container for conducting liquid therefrom, a second conductor extending through said cover and through the recess in the wall of the inner receptacle for conducting liquid from the outer receptacle, a valve body mounted on the cover and having its lower portion communicating with the first conductor, the. second conductor being connected radially of said body, a single valve element for controlling the fiow from said conductors, and a common outlet leading from the upper end of the valve body, whereby the liquids may be conducted from said containers to a suitable spray gun.

4. A container for receiving liquids to be sprayed by a liquid spray gun including, a cylindrical liquid receptacle having its upper portion reduced in diameter, an inner liquid receptacle inserted within the first receptacle and having its lower end resting on the bottom of the. outer receptacle, the upper end of the inner receptacle having substantially the same diameter as the reduced upper portion of the outer receptacle so as to fit snugly therein, the upper portion of the inner receptacle having a Vertical recess in its wall, a transverse cover overlying the open upper ends of the receptacles, an axial conductor secured in the cover and depending into the inner container for conducting liquid therefrom, a second conductor extending through said cover and through the recess in the wall of the inner receptacle for conducting liquid from the outer receptacle, a valve body mounted on the cover and having its lower portion communicating with the first conductor, the second conductor being connected radially of said body, a single valve element for controlling the flow from said conductors, a transverse yoke carried by the valve body and having its arms spanning the cover, and means secured to the exterior of the outer receptacle for engaging the yoke arms, whereby the cover is removably mounted on the inserted within the first receptacle and having receptacles- 5. A container for receiving liquids to be sprayed by a liquid spray gun including, a cylindrical receptacle having its upper portion re duced in diameter, an inner liquid receptacle inserted within the first receptacle and having its lower end resting on the bottom of the outer receptacle, the upper end of the inner receptacle having substantially the same diameter as the reduced upper portion of the outer receptacle so as to fit snugly therein, the upper portion of the inner receptacle having a vertical recess in its wall, a transverse cover overlying the open upper ends of the receptacles, an axial conductor secured in the cover and depending into the inner container for conducting liquid therefrom, a

second conductor extending through said cover and through the recess in the wall of the inner receptacle for conducting liquid from the outer receptacle, a valve body mounted on the cover and having its lower portion communicating With the first conductor, the second conductor being connected radially of said body, a single valve element for controlling the flow from said conductors, a nut surrounding the lower portion of the valve body, and a latching yoke threaded into the nut adapted to engage the outer receptacle and arranged to be moved into latching and unlatching positions by rotation of the nut.

ELLIE HUGH NORTHCUTT. 

